TY  - BOOK
AU  - Lewis,Harry R.
AU  - Papadimitriou,Christos H  .
TI  - Elements of the theory of computation / 
U1  - 511 
PY  - 2008///
CY  - New Delhi : 
PB  - Prentice Hall of India , 
KW  - MATHEMATICS
N1  - Includes index
ER  -